A Hierarchical Fault Diagnosis Method Using a Decision Support System Applied to a Chemical PlantReport as inadecuate




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1 CRAN - Centre de Recherche en Automatique de Nancy

Abstract : Automatic control systems with sophisticated control algorithm can be very large and complex. In order to improve the automatic process control, it is important to develop fault diagnosis strategy. A hierarchical scheme of fault detection and isolation based on Decision Support System DSS is presented. For fault diagnosis, a knowledge based procedure is required. In addition to analytic symptoms, heuristic information have to be taken into account. A pattern recognition method, a unified representation of all symptoms, and a fuzzy expert system are integrated in the diagnostic tool. This approach is applied to sensor fault detection in a chemical plant, and compared with different methods.

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Mots-clés : fuzzy decision on-line fault diagnosis pattern recognition fuzzy expert system.

keyword : fuzzy expert system





Author: Didier Theilliol - Philippe Weber - Marius Ghetie - Hassan Noura -

Source: https://hal.archives-ouvertes.fr/



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